Question

Iodine is necessary for the synthesis of which hormone?

• A. Adrenaline
• B. Thyroxin
• C. Auxin
• D. Insulin

Answer 1

The correct option is B

Thyroxin

The correct option is B.

Explanation for correct option:

• Iodine is an essential element for producing the thyroxin hormone in the thyroid gland.
• Thyroxin, also known as T4, promotes the metabolism of biomolecules like carbohydrates, proteins and fats in the tissues.

Explanation for incorrect options:

Option A:

• The adrenaline hormone released by the adrenal gland does not require iodine for its production.

Option C:

• The synthesis of auxin hormone in plants does not require iodine.

Option D:

• Iodine is involved in producing thyroxin, not insulin.
• The pancreas secretes insulin, which regulates the blood glucose level.

Final answer: Therefore, iodine is necessary for the synthesis of the thyroxin hormone.